Finding the Fourth Proportional to 1,613.28, 2,210.82 and 1,457.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.28 : 2,210.82 = 1,457.76 : x
2. Step 2: Convert to fraction form
   1,613.28/2,210.82 = 1,457.76/x
3. Step 3: Cross multiply
   1,613.28x = 2,210.82 × 1,457.76
4. Step 4: Simplify right side
   1,613.28x = 3,222,844.96
5. Step 5: Solve for x
   x = 3,222,844.96/1,613.28
6. Step 6: Final answer
   x = 1,997.70